软土地区不规则地铁深基坑分仓围护设计应用研究

Research on the Application of the Separate Silo Enclosure Design of Irregular Deep Subway Foundation Pits in Soft Soil Areas

软土地区深基坑开挖往往存在围护结构变形大、对周边环境影响大的问题。针对软土地区不规则地铁深基坑的情况,采用分仓设计施工的围护结构设计方案,运用启明星软件进行计算,并采用PLAXIS有限元软件分析基坑降水和基坑开挖对已建建筑物和周边环境的影响。分析结果表明:该围护结构设计方案能够确保基坑施工安全,并有效保护基坑周边建筑物和道路管线。

The excavation of deep foundation pits in soft soil areas often has the problems of the large deformation of the envelope structure and large impact on the surrounding environment.Aiming at irregular deep subway foundation pits in soft soil areas,this paper adopts the design scheme of enclosure structure designed and constructed by separate silos,uses Qimingxing software to calculate,and uses PLAXIS finite element software to analyze the impact of the precipitation and excavation of foundation pits on the built buildings and the surrounding environment.The analysis results show that the design scheme of the enclosure structure can ensure the safety of foundation pit construction and effectively protect the buildings and road pipelines around foundation pits.